This document delays the effective date of a final rule that appeared in the Federal Register on July 23, 1998 (63 FR 39477), that makes minor corrections and clarifying changes to 10 CFR Part 20 and conforms other regulations with the Commission's 1991 revised radiation protection requirements. In addition, the final rule includes a minor policy change that raises the monitoring criteria for minors from 0.05 rem (0.5 mSv) to 0.1 rem (1 mSv) in a year and for declared pregnant women from 0.05 rem (.5 mSv) to 0.1 rem (1 mSv) during their pregnancies.